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Fall of a Railroad Bridge Neap Frankfort, Kentucky - p297
doi:10.1038/scientificamerican06071851-297
The Eric Canal and Utica and Schenectady Railroad - p297
doi:10.1038/scientificamerican06071851-297a
Prevention of Explosions on our Western Rivers - p301
doi:10.1038/scientificamerican06071851-301b
Patent Law Case of an American invention in Britain - p301
doi:10.1038/scientificamerican06071851-301c
Thunder and Lightning—New Way of making Gas - p301
doi:10.1038/scientificamerican06071851-301d
